Securitizations is generally a very complicated topic. This book tries to explain a majority of the major issues, and the size of the book is evidence of this monumental task. This book not only discusses US applications of securitizations but also attempts to incorporate a global perspective by including IFRS in addition to US GAAP. There is also a discussion of different securitization trends in different countries. However, for my purposes I did not find those discussions particularly useful.
One thing I liked about this book is that it provided examples of many things. It showed valuation examples, flow charts, and a lot of additional materials that would help the reader understand the complicated nature of securitizations. There is also a whole chapter on Securitization Accounting, which is probably one of the most important aspects of securitization that needs to be understood. In my opinion, this book does a good job with the discussion on accounting.
There are also individual chapters on common assets underlying securitizations, such as residential mortgage backed securities (RMBS), commercial MBS, equipment leasing, etc. These focus on the individual issues that affect the different assets. For example, for RMBS, there is a discussion on prepayments and defaults. The author goes into a good amount of detail explaining the impact of each on the value of the different tranches and retained interests. The book also does a decent job discussing residual interest, but it is not located in one place. The discussion jumps around to fit the other major topics. In other words, you would find some discussion of residual interest in the valuation section and the accounting section. So if you are interested in one topic, you would have to practically read the entire book to get all the discussion on that one topic.
Although this is a very thick book, it is not hard to read. This is a good source for a lot of things about securitizations - I found other sources only tackle bits and pieces of securitizations and to gain a fuller understanding of certain aspects of securitizations one would need to piece together things you find from different authors. This book takes care of that problem, but you still have to be careful when you read this book because the complexity of the topic can easily lose/confuse the reader.